Walker 350-34020 Oxygen Sensor - Downstream, Downstream Rear or Downstream Right

Overview of Walker 350-34020 Oxygen Sensor

The Walker 350-34020 oxygen sensor is designed specifically for select Audi, Porsche, and Volkswagen models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for Audi A3, Porsche Cayenne, Volkswagen GTI, Jetta, and more
• Threaded mounting type with 18.0 mm thread diameter for secure installation
• 18.23-inch wiring harness length with radiused polygon male connector
• Wire gauge measurement of 22 for durability and signal integrity

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34020) features a heated sensor element that allows for faster warm-up times and improved emissions control. The sensor’s 4-wire configuration supports both the heating element and signal wires, ensuring consistent performance. With a wiring harness length of 18.23 inches and an overall length of 21.77 inches, this sensor is engineered for precise fitment and ease of installation. The radiused polygon male connector provides a secure and reliable electrical connection, while the threaded mounting type with an 18.0 mm diameter ensures proper sealing and positioning in the exhaust system.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering reliable emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct replacement solution tailored for specific vehicle applications. The product line emphasizes quality construction and compatibility, making it suitable for maintaining factory-level emissions performance on Audi, Porsche, and Volkswagen vehicles.

Compatible Vehicles and Common Applications

• Compatible with Audi A3 and A3 Quattro models
• Fits Porsche Cayenne and Volkswagen Touareg SUVs
• Suitable for Volkswagen GTI, Jetta, Bora, and R32 models
• Also compatible with Audi RS4, S6, and S8 performance sedans
• Designed to maintain proper emissions control and engine efficiency

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools for the 18.0 mm threaded mounting to prevent damage
• Verify connector type matches the vehicle’s wiring harness (radiused polygon male)
• Check wiring harness length (18.23 inches) for proper routing and fit
• Follow vehicle-specific service manual instructions for sensor replacement

Quality Assurance and Warranty

Walker oxygen sensors undergo rigorous testing to meet emission standards and durability requirements. The 350-34020 sensor is manufactured to provide consistent performance and long service life. While specific warranty details may vary, Walker Products Aftermarket parts typically include coverage against defects in materials and workmanship to ensure customer confidence.